Apparatus for generating gas.



H` F. WM UMNN,

APPAHMUS FU" mmafmma @AS MILICAHON Hihi) UEE. l HHG, Y l

D'vaulted Mar. 28, 19h).

Fai, fafa: a

H` F. WALLMANN.

APPARATUS FOR GENERAHNG GAS.

APPLICRUON HLE DEC, 4,190. l 177,584. Patented Mur. 28, 1916.

'4 SHEETS-SHED' 2.

Inventor.

MMMTW; i

H114 WALLMANN. .PARATUS R GENERAUNG GAS APPLICMIUN man 050.14.1910,

1,177,584. rammed Mm. 28,1916.

e gramm H. F. WALUVANN.

APPARATUS FOR GENERATING GAS,

APUCUON FILE DEC.\4,\910 l 1,177,584. Patented Mar. 28, 1911i.

" companying HENNING FRIEDRICH WALLMANN, 0F CHICAGO, ILLINOIS.

APPARATUS FOB GAS.

specification of Letters Patent.

ratenredaiar 2s, i916.

Application filed December 14, 1910. Serl No. 597363.

America, residing at Chicago, in the county V- of (,oolt andfStateof Illinois, haare invented a new, useful, and Improved Apparatus for Generatingy Gas,rof which the" following is ,a description, reference being had to thencdrawings, 'forming a' pant of' this specification, in Whichffsi'milar letters andjnmerals of, reference'ln the several figures indicate similar' part's'.

My invention relates to apparatus forl generating ygas from hydro-c'arbonaceous substances, preferably` from co'lting, bituminouscoahand more' particularly to proc'- esses and apparatus by which hydro-cai'- -bonaceons fuel is gasilied "in three" stages,

namely, first. by primarily and iniperfectly' distillingvsolid fuel by conduction arid'con vection of heat throughtliewalls of a retort, preferably of heat, derived from hot,

, gaseous products generated in `the third stage of the gasifying process; second, by secoudarily a nd perfectly distilling the residue of primary distillation by leading a gaseous heating and distilling agent, preferably hot gaseous products generated in the third stage of the ggfasifyiugr process through the residue of primary distillation; and third, by oxidizing remaining carbor or colte by a Supply of free oxygen to preferably car-l bonfnionoxid and by preferably utilizing..

a part of the generated heat for converting condensable distillates evaporated by the said primary and secondary" distillations into permanent gases. and for preferably disassociating steam into its elements, hydrogen and oxygen. the latter becoming associated with carbon to preferably carbonmonoxid; and thc objects of my improvements are` first. to facilitate and accelerate the said primary distillation by surrounding a comparatively ver)v narrow retort on opposite sides by two heat-conducting walls, preferably b v an outer and an inner wall or by outer and inner walls each partly inclosing one of two or one of several heat` ing chambers. preferably one partly inclosing an inner and theother an outer or one of two outer heating chambers, said inner heatingr chamber being full)v or partly surrounded by a retort of annular shape in a preferablyT past the said horizontal crossfsection or by two or by several;retorts'preferably of oblong shape in a horizontalAcross-section1 and located on op )osite sides ofthe said inner heating v:c ramber; second, to. preferably provide mechanieallmeans adapted -to be continuously operationfor supplying saidl fuel fronl a magazineinto i. the said retort or' retolts; third, to automatically regulate the fuel-supply from the said magazineinto.' the said retort or retorts in Such ai way als'to maintain open spaces and passa "ewvays for ldirstillates free of ,solid' fuel etween the body of fuelin the said magazine and that in each of the Ysaid retrlsgdoiirth, toronnect eaclrof the said open spaces and )tissage-ways to a suitable discharge-*canal* or distillates,- preferably pastgtli'e said inner'heating chamber, and to 'thuis provideanfupper outlet or upper oit'letsffor distillates from the upper partof tlie\said'retort or retorts; fifth, to preferably pro agitating and promoting the heated and, as a result ofheating, pasty mass of partly molten and liquefied coling bituminous coal during its presence within and for its dischargefrom the said retort or retorts; sixth, to provide suitable mechanical means for breaking and erushing the resulting partly colted, hard andbrittle residue of primary' distillation; seventh to provide a lower outlet or lower outlets for distillates from the lower part of thesaid retort or retorts, and to connect the same to a discharge canal for distillates, preferably past thesaid inner heating chamber; eighth. to secondarily andperfectly distil residue of primary distillation within a chamber suitable for this purpose byI a passage therethrough of a hot, gaseous fluid or dist-illing agent, pref erably consistingr of produeengas generated by a partial combustion of'residue of this secondary distillation. or consisting of a mixture of said producer-gas with super heated steam; ninth, to connect the chamber for secondary distillation to a discharge-canal for a mixture of said distilling agent and of the evaporated distillates` inner heating chamber and to a canalv use d also for discharging distillates evaporated in the said retort or retorts; tenth. to provide the com "ide mechanical means for continuously bustion chamber or producer shaft emloyed for gasifying residue of secondary istillation with a vertical conduit or witi vertical conduits in'its center part for the discharge of distillates into the lower part of the fuel bed therein; eleventh, to connect the said conduit -b'rcenduit's, referably past the said innerheating cham er, to the said chamber for secondary distillation or to one or to each of the said outletsV for distillates from the .said retort or retorts, or as well to the said chamber for secondary distillation as to one or to each of the said outlets for distillates from the said retort or retorts; twelfth, to preferably provide means for ejecting the .gaseous contents of the said inner" heating chamber past the said vertical conduit or conduits into the lower part of theA fuel-bed within-i the said producer-shaft and-to preferably employ steam or compressed producer-gas-or ia mixture of both under pressure. as an-ejecting agent; thirteenthto provide,in,the lower end of the wail partly or fully' surroundin the Ysaid chamber `for secondary distillation a jacket orconduitfor a cooling agent not containing a substantial quantity of free oxygen, but preferably consisting of steam or producer-gas of ymoderate temperature or of a mixture off both for cooling that art of the said wall mostly exposed to the iieat of the hot gaseous products employed as distilling agent; fourteenth, to provide proper means `for leading said cooling agent into said jacket; fifteenth, to preferably provide means controllable at will for separately withdrawing: distillates from the said retort or retorts, a mixture of distilling avent or agents and distillates from the said c amber for secondary distillation, and producer-gas from the said producer-shaft; sixteenth, to preferably providel'means for sucking air and preferably a mixture of said ejecting agent, said distilling agent. said cooling agent, and distillates through incandescent fuel Within the said producershaft, for sucking a part of the resulting permanent gas through the said outer heating chamber or chambers, and for sucking another part of the resulting permanent gas through residue of primary distillation Within the said chamber for secondary distillation and preferably through the said inner heating chamber; seventeenth. to preferably combine a part of these suctionmcans with the above said means for supplying ejecting and cooling agents for therebyy creatingr a closed circuit oi a gascurrent nniintainingr :i constant quality of gas in the gas-space of the apparatus at times when no gas is temporarily withdrawn for the purpose of its regular manufacture; and eighteenth` to provide new and improved mechanical means for fuel-feeding, for maintaining open passage-ways for the discharge of distillates, for promoting and agitating the fuel during its presence within and for its removal out of the retort or retorts, for breaking andcrushing the partly coked fuel, for removing ashes from y the lower end of the producer-shaft, and

for automatically regulating these mechanical functions in accordance with the amount of gas simultaneously required for Vthe pur- )ose of its manufacture. I attain these obi ]ects by the a paratus illustrated in the N-N of Fig. 1. 'Fi 3 is a. side-view of a part of the retort of Fig. 1. Fig. 4 is a horizontal section at the line M Fig. 1.` Fig. 5 is a verticall cross-section through the main parts of a gas-producer, oblong in its plan. Fig. 6 is a vertical longitudinal section through a part of an oblongretort, at the line N-N of Fig. 5. Fig. 7 is a horizontal iection at the line M-M- of Fig. 5 and illustrating a part of a mechanical agitator. Fig. 8 is aA vertical longitudinal section through the center line of Fig. 5, and Fig. 9 is a vertical crosssection through the modified construction of an oblong retort, broken off.

I shall first describe the construction of the apparatus illustrated in Figs. 1 to 4: P is a` producer-shaft, circular in 1an fireproof lined, provided with an air-inist b, and preferably water-sealed at its base as is usual in gas-producers. The fuel-bed is supported by plates l0 and l()a carried by arms 11 with which` said plates may be revolved about a center-column 12 by means of a crank 13, sprocket-wheels 14, 14, chain 15, shaft and pinion 16, and bevel-gear Wheel 1T. Above the producer-shaft P is located the chamber D for secondary distillation, being surrounded partly or fully by the lower part of a retort wall R, the upper part of which partly inc-loses a retort below a magazine for fuel O. The lower part of the retort wall R is integral with a wall w inclosing an annular cooling chamber Q9 surrounding the lower-part of the chamber for secondary distillation-D and communicatiug therewith through perforations iu tho lower end of the wall w. A pipe 28 may deliver a cooling agent into the chamlu-r 2) and through said vperforations through the wall w into the chamber D, as

in rlivatril hy arrows. The retort R surrounds a hoilow screw-spindle S supporting two screiY-tlircads, an upper screw-thread T'hi smaller pitch and a lower screwtliriafl "l"l of roarscr pitch. These two renier-threads are connected to each other by ine-.ins of a steep fiange or a steep part of va screw-thread t having a pitch sutliciently M of .i

coarseifor allowing therdropping of fuel from the lower end of upper screwthread T directly down to the upper part of the lower screw-thread T15, and at the saine, time for4 preventing together with a shield t1, the entrance of solid fiiel into the discharge-hole for distilflatesiyi. Y

'l is` awalve orpurtfor adni'ittink' solid `fuel from a hfopperlntUthelIiiagazine O.

y TL Rollerfbeaijings 23 support the rotary" spindle S, the interiorof which"svfsepaijated' f rpinthe atmosphere byliiica'nsAV ol'fa water? pawl :2O mayliniptrt'iotarymotion te Athe 'with its screwthreads.y lAtitiit'onary' dischar e-pipe vfor'gaseous ilvistillates 22 is lo- 'cate in the center of the'holl'ow'v spindleV and isbonnectdl to a downward'itension 22a' extending doiviijt'o thev -lorver pact 'of the `producer-shaft P-,hnd communicating theiief with?throughf holes 4Q pieferabl A, located fabve the plates 16%' TheI ipes 2l and'22 "aretsupported by'tlie ecrite swlinii; 1.12, and

by the movin incandescent colte within the producer-sha tVP and within the chamber and 27 ordistillates, the former being shownY open for lead-ing distillates from' theV retort into the interior of'tliehollowspindle 4S with the outlet 27 bein'gi` shown 'closedby a suitablel cover. In the case however that it -is desired to utilize at an outside locality a part or all of the distillates evaporating intothe recess 26, said cover may be removed Afor connecting thenoutlet 27 by means of'a suitable discliai'gespipe for distillates to 'said' outside locality; 'and the outlet p maythen eventually be closedi Also a hole -lilce 27 may in any case -be provided with a" corei of. transparent material and may be used for inspection. Catch arms o, ofremore solid fuel 'from the recess 2G toward tlie lowersuur-propeller T1 and into the retoitR A heating chamber H, partly inclosled by the annular wall 42, preferably1 consisting of non-lieat-conducting material.

surrounds the retort R, into thel lower part of which project from the retort \\'all, statioiiary short studs (Z1 and from the spindle S short studs of for breaking between tlicln the partly colied. hard and brittle furl.

Rods r/suitably fastened to the lower cnil or the hollow spindle S extend into the chamber l) for secondary distillation and'4 promote thil fueli. jtl ii ercin toward the. pioducer-shaft l. (lro'ores 3() with ribs bertween them on the inside surface of the retoit'wall R prevent or impede a rotation of fuel with' tlic revolving screw-propeller T1.

A gas d isoliarge pipe 33 may leadagenerated gas-from the heatingfcliamberl H,pastltlie three-way 'valve V either through the pipe 34 ,toward a chimney and the atmosphere Aor through apipey toward a scrubber and toward other apparatus or machines Pro1 `vided with suction means for utilizing the `generated gas as is usual in suctiongas. producers; A combined exhauster and blower y2134 Y maymsiiclc chamber H .through 32.and'.,il'eliverI the `gas preferably with the valve 28 open through two pipes 28 and 48 intothejacketoiycliamber 29 and also ias; from .the heating. t e gas-discharge-pipe past tliq-tthree-way valve V? either through .r if a pipe 14&9 vImward a, chimneyL and the 4atmospheror YythroughA thel pipe y52.1 `toward Aan ejector for. ejeeting gaseous. contents from `the interior of ,the hollow spindleoS through the tubes l22, 2f2fandl holes 40 into the louter,

pai-tof teheproducer shaltfl. i 5A; pipe 3G may be proyided for leading gaseousgcontents from the interior of .tjhe .hollow spindle Spast thej valfve V1 ,to ,any

Yall thegaseousy fluid accumulating in L`e` suitable outside location and'in casetlfit r interor of the hollow spindle Sy is thus wi 1' drawn to an outside location, the pipes21, 2" 22, 38 shieldr pipeor cap 37 andrebrick column 39 `may be dispensed \ivi`l :h.- A pipe and valre 50 may be provided Afor leading steam `from any suitable source ofV steam tlirouglrthe lower part of the pipe '28 with the valve 28 preferablywclosed, ilit the cooling jacket or chamber `29, and iiip the case that only steamI is thus employed as coolingvagent and that the gaseousyfluid accumulating in the interior of the hollow spindle S is witlidrawnto an outside location, the fan or blower 25 may be dispensed vwitli.,

Instead of'providing a cooling Ajacket or chamber 2l) in the inclosure, of the chamber for secondary distillation D, said inclosire may consist 0ffiife-proof or refractory inaterial or may be protected by a surrounding mantle of tire-pr0of material., in which case all means for supplying acooling agent may be dispensed with. Un the outside of the rctoit-wall R and integral therewith are preferably provided llangcs or projections 3l arranged in such a way that the generated lgas issuing from thc pioducensliaft l) and flowing toward the gas-discharge pipcsB-B and 33 iinpinges against said flanges 3l and imparts the greatest part of its perceptible lient to the same and thereby to the fuel within the re- -iort li.

41 is a perforated ball provided for introducing a poker-rod into the producer-shaft P as is usual in gas-producers.

43 is aiy mechanical feeler connected' to a double lever 44 pivotally connected to a piston 45 of a hydraulic cataract and to a connecting-rod 46 in o erative connectionK substantially constant height of the fuelbed;

The prolongation of the piston-rod 47 is connected in some operative way to the ratchet-pawl 20 iand'disenggs the saine fromtheratchet-gear 1911s soon as the piston 45 Vrises over its normal' position. The defiils pf this contri'vance are not parts of theV present invention, butV itV may7l be 'exlained that the connectin -rod 46, the dou- Eloi lever 44 and the mecanica] feeler 43 slowly reciprocate `in a vertical' plane, the iston 45 being in itsnormel'postionas on as thefmech'anical feele'r 43 Idoes not stri e; the fuelihed within the producer-shaft Pilt vthe end of its downward movement. Whenever the fuel-bed by'too quick fuelfeeding rises so high as to impede the downstrokeI of the mechanical feeler 43," the piston 45 is raised by the upward motion of the connecting-rod 46, and in consequence the rising pistoni-rod 47 stops by suitable mechanicalfconne'ction's the rotation of the screw-propellersla'nd T1 andy of the attachments4 connected thereto.

The apparatus-and process operate as follows: After'the pipe 33 s connected to the pipey 34 and to a chimney, a fire is kindled in the vproducer-shaft*P and 'coke or an thracite coal gradual-lyfsupplied by means of the screw-propellersT andT1 until the fuelbed hasattained its normal height in the producer-shaft P, the chamber D and in the lower part' of the retort R. The draft of airthro'ugh-th'e fuel-bed may be further romoted :by connecting ythe combined eX- liauster and blower 25' by means of the three-waylvalve V2 and through the pipes 48 and 49 to a chimney, and by connecting the apparatus' to a sourceof motion thereby starting the operation of said exhauster 25 which, with the valve 28*l preferably closed, creates a partial vacuum in the hea'ting chamber H and on top ofthe fuel-bed in the producer shaft P and thereby sucks air and eventually `other gaseous fluid into the lower part of the said fuel-bed. As soon as the latter has become sulliciently hot, a cooling agent may be admitted into the cooling 'jacket 29 by either opening the valve 2R with the valve 50 closed or by opening the valve 50 and by admitting steam through same from any suitable source with the valve 28 either closed or more or less open.

In each case the combined exhauster and blower 25 may be connected by means of the A valveV2 and the pipe 2l to the ejector z' and thereby caused to eject gaseous contents from the hollonwspindle S and to thus create therelna partial vacuum causing in turn a How ofthe cooling agent admitted to the 1 jacket 279, z. e. either steam from the open valve 50 or 'gas from the open valve 28" or a mixture of both fluids from both said valves, through the fuel in the chamber D toward thehollow spindle S and the ejector' z', from Where the resultin mixture of the ejecting agent from the b ower` 25 and the cooling agent from the jacket 29 tiows througlh the tubes 22and' 22 and holes 40 into t le lower partrof thef'uel-bed Within the producershaftP, 'y With the introduction of steam into the jacket 29,rsemi-water gaswill nowl be enerated and the pi1 e' 33` may be connectedg by means of the va ve V1 and the pipe 35 to a,` gas engine, boiler `er other apparatus for consuming or storing the generated gas. At the same time, b tuminous coal or otherv hydrocarbonaceous fuel or substances may besup'plied into the magazine 0 from where catch-armee, and y the screwfconveyer T deliver the yfucili-putti:

the annular recess 26 into the helical canal partly inclosecl by the screw-conveyor T1. Thelbituminous `coal being'heated within said helical canal,A fuses into a pastv'lnass and expands but does notlfully occupy the helical space between the scrcw-threadl'1, leaving cavities for the discharge of the generated distillates toward the annular, recess 26 from Where the same maybe dis'- charged either through the opening v2'? or through the holep and in the latter case either. into the ejector i or `into the pipe 106:

36. After a certain part of the hydro-can honaceous constituents of bituminous coal is distilled Within the screw-conveyer "I, the residue thereof becomes Va4 hard, solid and porous mass, which after being crushed 110 by the studs al' and d* is secondarily and per` fectly distilled and convertedinto coke bythe het current of a distilling agent consisting either of hot gas only or ofn mixture of superheated steam and gas issuing from the steamjacket 29 and from the fuel-bed within the producer-shaft P respectively, said current penetrating said crushed, porous mass and distilling the remainder of hydro-carbons contained therein. The resulting gaseous mixture consisting of producergas and distillates with or without steam is Withdrawn through the hollow spindle S and may be discharged, either in conjunction with or Y without the generated distillates from the annular recess 26, either through the pipe 36 toward any suitable location and appa` rains for separating by-products, such as ammonia, tar, creosote, etc., therefrom or for its consumption or storage; or said resulting mxturemay in conjunction with or without generated distill'ates from the annuljir recess 26, be. discharged by the'ejector i through `the pipes 22, 22? and through the holes 4l) intotlie lower part of the f uelbed within the producer shaft P frornwhere Said gaseous mixture rises throu hthe incandescent portion thereof, part y toward thefchafmber 'D and partly toward theheating chamber and the gas-discharge pipes 32` dhd33, whereby all v'the condensabl'e vdistillates and 'steamcontained in said gaseous mixture are converted into permanent gases by th Well known chemical process in. coinbining 'with'air entering through the airinlet by and produn" A' the lrequired heat, by consuming the-eil'y on contained, inthe residue emitted from the secondary distil lation chamber into the producer-shaft P.

B revolving theranli 13` and thereby the rolary plates ,102 ar'f 1d" 101 operatively con nested thereto, tlieashes and elinkers'lresulting vroindzhegc',ornjbusiiin of `'coke within the producershaftP, r'nly'be removedV therefrom' and may befclropped into the water below, ,from where'lthey may be removed in the `way customary inthe operation of gas prodlicers,

Describing rIQW the modified construction illustrated in'Figs. 5, 6, 7, 8 and 9, P1 is the producer-shaft, oblong inV its plan and lireproof line, the fuel-lied beingv supported by oblong plates 10 adapted to oscillate about horizontal shafts'o'r'pivots '121. Above the producer-shaft P1 is located the chamber D1 for secondary distillation, oblong in its plan and inclosed on 'its `two opposite long sides by two oblong cooling conduits or cham- -hers 29 :communicating through numerous perforations with the lower part of the chamber D1. Aboi'fefthe latter are located two `ietorts R1 aii'd R1, oblong in their plan between two heating chambers H1 and H2 and on opposite sides ofY the heating chamber H3. All of the said three heating chambers H1, Hand Hj hre oblong in theirplan, and the outside heat-ing chambers H1 and H2 are preferably protected against loss of heat bv non'conductors of heat 42` maga- Zine 01 oblong in itsplan is located above the said two retorts R1 and R2 a nd connected by chambers F1 and F2 reslwrtivel-y to the upper part thereof. 'lwo rollers or drums T2 and 'T3 a re adapted to cfi'cct and to regnlate the delivery of fuel from the magazine (l1 into the retorts lt and R2. past the cham hers F1 and F rcspcrtivcl-r. Distillates evaporated in the upper part of the rctorts l and it'I may enter inlo tho chambers I"1 aud l"' und From there cithrr through hoh-s inl'o tlu hunting chamber ll or through holes 2.7 into canals 27" from whore they may he carried to any suitable point of drs tinalion (ias may enter troni the heatingr rliainllcrs H1 and H1 into canals 51 and 52, and from there a part of the gas may be sucked by the-exhauster 25 through the pipe 32 and may be delivered throughv pipes 21 and I into a plurality of ejectors z', througlvpipes 22? into a horizontal canal 22" and past-the holes 40 or 40a into the lower part of the producer-shaft P1 thereby ejecting gaseous contentsfroin the heating chamber H3v into the incandescent fuel-bed within the producer-shaift P1. In the case that steam from any suitable source is employed as ejecting `agent, the same may enter through a pipe and valve 50aL intojshe pipeL The latter or the pipe 21, maybe connected in any ,suitablemanner to the cooling-chambers29 forV furl into the chamber D1 for secondary dis` tillation and for breaking and crushing the fue] before its entrance into the chamber D1, two respectively and reciprocally mov` able frames Kkand Kl are provided in each retort R1 and'RY. Theseframes K and K1 are supported by rollers r, lr and either by horizrntal guide bars g rigidly fastened to or integral with thelong wallslof the said oblong retorts on the inside thereof, or Said rollers r, r may in turn be supported by ofi'- sets of the long walls of the said oblong retorts on the inside thereof as is indicated in Fig. The top of the frames K and K1 may be provided with lates 53 for protecting thero'llersr, 1 an the guide-bars g, g or the said guide offsets from fuel falling into the retorts, and guard-plates 54 may be provided for the lsame purpose asindicated in Fig. 9. Each of the frames K and K1, is provided with studs d3, the studs of one frame being located relatively tothe studs of the other frame so as not to prevent the motion of the two frames, but sufiiciently near th cach other as to be adapted for breaking, crushuig and agitating the fuel between them with the frames K and K1 reciprocating in opposite dii'ffations. To each frame K and K1 is connecte" one of the rods c, c1, a2 and e auch of 'which in turn connected to one of the lovers k1, fr, and zi". cach boing pivotally connected to the rnd of one of the links f, f, and f and also properly connected to one of the two iuay be reinforced hy stay-holts or in any terial in which case said cooling chambei" can be dispensed with.

The apparatus operates in the same or in a similar way as described with reference to the .apparatus illustrated in Figs. 1, 2, 3 andr 4 with the motion of the mechanical devices modified Laccording to their modified shape and character and according to.` the specific shape of the gas-producer with its retorts, as will be -unders'tood by any mechanic.

The leading principle of my processr and `the two ap aratus illustrated for' generating gas, may e shortlyY described asV follows: roducer-gas is naturally hot right after it has been generated, and would cause pre-` i ition if mixed in a hot state with air and l thereto, coke Instead ofv ashes und clmkers `may be dischar (ed therefrom and the t en compressed as is usually done in gasengines. It is therefore of advantage to utilize its perceptible heat by transferring the same to freshly supplied and often moist fuel for the distillation thereof. In .order to` accomplish this transference of heat as quickly as possible, the vessel for doing so is made narrow and of well heut-conducting material, preferably of metal, which however is liable to be destroyed by an excess of heat and is therefore not adapted to transfer ashigh a temperature as is required for a perfect distillation of most kinds of fuel to be gasied. For this reason the imperfectly distilled fuel is removed into another fepace` or vessel through which a heatn agent of sufliciently high temperature is le preferably by suction. The volatile ingredients of the partly coked and in most cases porous residue of primary distillation are then quickly and completely evaporated by coming into immediate contact with 'the said heating agent.

In the case that the fuel consists of bituminous coking coal.y the sume fuses into f a body of p `y mass when heated, thereby greatly impe lng or preventing a passage of gaseous fluid through the whole or through part of its body toward a certain predeterL mined direction or location. pasty mass occupies a `vertical conduit or retort with upper fuel inlet and lower colteoutlet as is usual in gas-producers. it is practicafly almost impossible to discharge all of the generated distillates in either a horizontal or vertical direction through a single out- If the said let, because the distillates generated near one extremity of the body of pastyvmass are practically prevented from penetrating this body toward the opposite extremity thereof. In order to be table to discharge under such conditions distillates toward a certain predetermined direction or locality, I either provide mechanical means adapted to keep open a passageway for distillates free of solid fuel through such pasty mass, as is shown in Fig. 1, or I provide the retort with two Voutlets for distillates, one near the fuel inlet into and the other near the coke-outlet out of tliesaid retort for separately discharging distillates generated at and issuing from opposite ends of the said body of pasty mass, as shown in Figs. 1 and 5. At the same time I provide mechanical means for gradually promotin the fuel -through said retort or retorts,an" for preventing a sticlc ing, arching, andywedging of the fuel under distillation thereing which mechanical means are naturally of so' much greater importance, the narrower the retort is made, and the quicker accordingly the process of distillation proceeds. 1 y Y v By accelerating the motioncf thc\coke through the combustion chamber `P or P1 and by reducing the amount of air supplied amount of coke t us produced may be increased by a reduction of the amount of hot gas required for distillation, which reduction can be Iliade by leading a sufficient. amount of air into the heating chambers H,

Hl and H* for completely consuming the amount of gas delivered thereinto and for thus generating a sullicient amount of heat for distilling the fuel by means of a greatly reduced amount of gas.-

In the case that it is desirable to generate a gas not containing a substantial quantity of nitrogen, pure oxygen or a mixture of oxygen and steam may be used instead-of air or partly consuming the coke delivered into the combustion chamber P or I", and the resulting `gas o r a part of it may be employed as distilling agent within the cham,- ber for secondary distillation D or D1, whereas another part thereof or gas from some other suitable source may be used as heating agent in the heating chambers H, Hx and H2.

In the claims the word outside l is used with reference to the retorts or distillation conduits R, R and R2. and to .he walls thereof. It will be understood at inasmuch as the retort R is annular or ringshaped in a horizontal cross-section1 the wordA outside is intended to include any location surrounded by the ringvshnped re tort R and by its inner wall, viz. the hollow spindle S.

In the claims reference is made to an ob 35 *fer heat from the contentsof-one `of 'the' long retortto oblong retorts,to an oblong chamber for secondary distillation, to Van oblong heating conduit'or chamber or to a plurality of` such oblong conduits or cham;

bers. It'will be understood that the words blong"land parallel in the claims have falways'the meaning `of oblong in plan.` or nhorillontal crossv'sectionfi or of parallel equs products` 'of'. combustion from saide chamber into con'tatiwlth said\'\iall,?'and` a perforated wall;constructed vto allow a.

` communication between l-'Said 4distillation chamber between and A ,inside parts ofA walls of the sind two cons' conduit and one of duits.` i i 2. In e gasprodueer,-`two distillationconduits et a distance from eachotheigffa gaspartlyiinclosed by twb duits, an'in'let for 'distillatesf from the latter into and a. gas` out-let out of said gaschanr ber, and two' heating chambers partly inby two outside parts of` walls (if the i two conduits, each ofthe said two outsidepartslof walls being adapted ltotransseid two heating chambers to fuel, within Ithe appel-taininddistillation conduit. :l f 3.

`conduits at a. t nce fromfeach* .ter in o and aV Ygaa outlet out of said gas chamber, chamber for secondary distillation at the lower end of the said gaschanlberand of the said two conduits, twoI heatin chambers parti inclosed by twobut'side 'pa rts of wells of t e said two conduits, eacliiif the said two outside parts of walls 'being'v adaptd to transfer heat from the cpntents o `one of the said two heating chambers to fuel y within the appertaining distillation conduit,

and eproducer-shaft in communication with said chamber for secondaryY distillation.

4. In an apparatusfor distilling fuel, a distillation conduit for simultaneously conveying and distilling fuel, e` heating cham- .said two heatiigicon;

a gasinducen.y two distillationother? n" gas-chamber between and partly i'nlosed by tw'o inside partsof walls of the iid` two" cond lits, an inlet fordgistill'ttes'fro itheflatting wall constructed to be in contact with gaseous products of combustion within said heating chamber and with said iuid in said fluid chamber, `a supply of said Huid into said liuid-cbamber, a perforated ,wall consti-acted to supply fluid from` said "Huidchamber into fuel under conveyance within said conduit, an outlet'` for residue of distillation and asecond separate outlet for e mixture of said fiuidland distillates from said conduit, and mechanical means Vfor Vwithdrawing:said mixture from said second outlet. Y i

5. In a gas -`vproducer, a distillation conduit for distillingfuel, a heating chamber vrin operative proximity and lateral to said conduit, 4a source offcombustible communi` eating with said. heating-chamber, an air. supply for consuming said combustible, e steamV chambcnin operative proximityy and lateraltosaid conduit, a steam 4supply into said steam chamber, and a heatponducting, Fperforated wall'constructed lto be in contact with lfuel within said soudain-with gaseous prioduets of comlnistion within ,'said heating chamber and with .steamv vin said steam i chamber: for superheating said steam and for supplyingthe super-heated steaminto said conduit. ,y ,t i ,V5

6; In` an" apparatus for distilling fuel, a distillation conduit for simultaneously convering'y and distilling fuel, a heating chamber, a Huid-chamber fora fludnot containing a consequential amount of `free oxygen, a perforated side Wall of said conduit and constructed to be in contact with fuel therein `and located between sai'd conduit and said two chambers, a source ofconibustible communicating with said heating;r chamber. an

air supplv foiconsummg said combustible,v

an inlet for said efluid into said Huid-chamber and communicating through the latter and through said perforated wall with said conduit, an outlet. for. gaseous products of combustion from said beating chamber, and a discharge canal for distillates from said conduit.

7. ln a gas producer, a combustion chamber for consuming residue of distillation, a distillatioi'i conduit for distilling fuel and Iocatedanterior to said chamber for supplying residue of distillation thereinto, a chamber for distillates located at the-opposite side of a side wall of and with respect to said conduit, au outlet for distillates from said vconduit into said chamber for distillates. a canal surrounded by said chamber for distillates and loading' into the fuel-bed within said combustion chamber, nn inlet Por distillatrs into thel upper part of said canal within said chamber for distillatcs. l-and an outlet for distillates out of the lower part of said canal within said furl-bed.

R. ln an apparatus for distilling fuel. a receptacle for fuel, a distillation conduit said conduitsand leading towardsaid chamber1 a separate outlet for distillates provided for .each of said conduits, a source of hot aseous products of combustioma sourceof 5 duid not containing a consequential quantity of freeoxygen, means for mixing hot gaseous products from one with Huid from the other of said sources, and means for leading resulting mixturetli'ough residue of primary distillation within said chamber.

16. In an a aratus forvdistillin fuel a plurality of ogltmg distillation con uits for simultaneously conveying and primarily distillin fuel, means for heating fuel in cach of said onduits, a chamber for seconda distillation below and counnunicuting wit each of said conduit-s, au outlet for residue of primary distillation provided for each i of` said 4conduits and leading toward said chamber", a separate outlet for distillates provided for each of said conduits, a source of hot combustible gas, a source of steam, means-formixiiagjxot, as from one with Steam from the other o said sources, and

means for leading resultin mixture through residua of primary dis'til ation within said chamber and'toward locations in proximityf` to butexterior with respect to the lower parts of said conduits.

17.', In en apparatus for distilling fuel, a. receptacle for green fuel, a plurality of oli long distillation conduits for simultaneously conveying and distilling fuel,V mech'unical/ means for su plying fuel from said recepl;acle 'into eac v-one of' said conduits,` means for heating and disti l `n'g fuel in eactrone `of said'conduts, mpei'j oruted long si 'wall of eachV one` of spidoblong cond and!y each -one'nof said oblong conduitsfcommuui 40 eating through said 'perforajg'dlon .sidwall with asubstanti'ally b'r'jznt ita/nal constructed fortliispiissrge of tliild. 18. In'an appumw fordi'stiiliugMeLa souroeof fuel, a plurality of`oblong distill tion' conduits for Simultaneously/-conveying and distilling fuel, fuel distributing means above said conduits foftf supplying fuelfom said source into euch one of said conduits, means for Vheating and distilling fuel in each one of said conduits, a plurality of canals below scid fuel `distributing meansand each constructed for the passage of gaseous fluid, a perforated long sidewall of each one of said oblong conduits, and each one of said conduits` communicating throug; said perforated sidewall with one of sai canals.

19. In an apparatus for listill' g fuel, u source of fuel. u plurality of ob ong dis tilluton conduits for Simultaneously c0nreying nud primarily distillintf fuel, fuel distributing menus chore scid conduits for supplying furl from said suur-cc into auch one thereof. meunslur heating und listilling fuel in earl; our ol said conduits. .-1 plurality' of canals below said' fuelldistributn'g'fu' means and eclt constructed 'folg'the of gaseous fluid, a perforatedllohgsidewo of each one of said oblongcoudultfof ef;- Ifecting a communication betweentlje'ro rtaining conduit and one of said canal ,fa 'lo' chamber for secondary distillation said conduits and constructed to boohdttiiljt distil residue resulting-from prxnery"diiV tillation iu one of said cond'uitss',asource-ofM V hot gaseous products off combustion, aiid'l means for leading' said hot gaseous products from said source through residuerof priL mary distillation within said'cha'mber.

20. In an apparatus rfor distilling fuel a', source of fuel, a plurality of oblong distil as" tion conduits for simultaneously conveying and distilling fuel, fuel di'stributingg'means above said conduits for supplying fu'clgfroiu said source into each one-Jof-surd conduits; means for heating and distilli i ffuel in each 85 one of said conduits, an outlet 4or residue of distillation from the lower part of each one of said conduits a pluralityof substantially horizontal canals each constructed-for tlir passage of gaseous fluid and each in communicat'ion with one of said'condu'itsat points .located below said fuel distributiugmeans ,and above said outlet, and it-long' s'ide'wnll of each one of said oblong cond-uitsslnd constructed to allow a communication between the ap ertainingA conduit iand one of said canals ut4 to impede the entrance of solid fuel from saidconduit into the appertaining one yof said canals.

1. In an ap aratusfor distilljnfuel, a` 10o reoeptaclefor ucl, afplurality of distilla-y tion conduits below said receptacle? and subY stantially parallel toieachy other and each' oblong in a horizontal erosie-sectionl nde'o'ulstructed to distil fuel and lto simultaneously convey' fuel from said receptacle' ini downs ward direction towardy a receptacle' fr' sli'd residue of distillation, means-for heatingA fuel within each of said conduits, meine' for agitating fuel in substanol'ly horizontal 1di- 110 rections within each of sai conduits, and a 'plurali't of substantially horizontallcanals for the ischarge of distilltes and each communicating., with one-of said conduits ut a locationlmtermcdiate between the two said receptacles.

22. In an apparatus for distillihg fuel, a plurality of oblongY distillation conduits substantially parallel to each other and provided nach one with tuo opposite short and two opposite long sido `walls and each one constructed to distil fuel and to convey the sume in n downward direction toward a receptaclc for residue of distillation. a plurnL itv of oblong heating; chambers substantially parallel to each other und to said conduits.` lhc side walls of enrh one of said conduits beim;r partly integral with the inclosuresof n plurnlity of snicl clmmber: un in let for i1 heating ugunt into nach one of sind hum bem, u plurality of outlelqrforilistilllhtes through enr-h nno of sjuidtivoopposite lun sifle wullhl oicuch onu of $ixill tuinhuis, un means for, ngi'tntiug imlA in substuntinlly horizontal diri-.ations within enixilrone of s'nixl conduits. l v i i 2li. In un -:ippnrutuls for dln-Uhlig? fuel, :r plurality of oblong listillntion ndluhlits suhsta ntinlly` ps lrullel to' onullroth'er u'nclfpdroiv villudouch gine, with two. o mnsitv. Short uul two oppositolhng ,willcwulls nml em-.h m10- nnstl'uctcil to listil furl and to simultannusly convoy the. sumo tuu'nrfl u rucopinqh. for rvshhuz nl llilstlhition. mums fmxhvutiugi full vouvlqjoll within vul-h m0 nl, :1illconduits.` :nula ph'lrnlity of outlets for .glistillntvy: through ouch :um if .mill1 two appui sito longdqi'yq ls if nnugf Suhl olnulnts.

2l. lnuninppurutilgejfln; ghSt'il-ling full, "n plurnlitymffobloni; llistlllfutionj grlnclfuiit su stuntinll)vl purlillzliu ,Ouch othyr uvniilfplivillenl ouch m10 with tiro opposite :jllor-t' und two nppnsitv long Sichwulls null-Puch ,hull Unstrut-.toll tu priuiurily listilfuvl :l'ml to mu-ry thu muuulgxnrll u rliuuilwljfgar slfcmulurfy distillation. nouns fm; hunting thv liu-vl ronwvvll ini 0:uih'-mw nl Barilli-m3 Li umilwtrurtrll fr priiuuliluv il peratur with respect to each other, a reooptuch for solid combustible.I a distillation congluit constructed to convey a mass of fuel fronill .Zone-of lower tempernture'in conscn'tlvef brr through said distillation-- aos to \\'urd"snid receptacle, `means proifi-ded for preventing ah entrance of a conv no(nient/trll alnfo'unt' of nir in its natural @I te'lnioul churuitr Liuto fuel under couveyuuh tlu'ou'gl'i sind dlstiNation-zones, Ameans forhehting fuel under conveyance through snll flistfll'utibnryfdnes, and means for fliS" (-hurifiug 1eib'purixtvly ont of ouch one of said listllu lion-zoute resulting .li'stillntes lnfnn zlm'mrn'ils for fiaf'timmlly (listillig fuel; fr plurality of distillation-zon@ partly of4 lower und partly of higher tompernturc with' xepct to each other` n re` l-l-ipturlc for solid combuslihle, n distillation muiluit cnntrurted mconrey a moss of fuel from :x zone-ivf lower temperature in cons iutve oi'tlery throufilr snild distillationon'oe townrrlsuirl ro'coptuchet means provided' for preventing :in entrance' of n oonsizgillvi'itiill uniomt f air in its nnturnl flnfiufull44 character into fuel under conveyv iulo'ithrougli' suiil llisitillntiomzoues, means fir lending" hot ilistlling [luid into fuel of gl umsk's unilimenns for dsuhm-gin s epurg uly milfjf icfli one of Suid (hsti ntio'nmlns' resultfng (lSt'lln-t.

23.111 :mi nppxirntus for frnctionlly distlllng fluel; u plurality of dstilhiton-zons {inl-'tl'y of` hurl-r und purtly of hi her tem-- pfiithro'h'itll .rostmot'to auch ot 1er. u recui; x'lc for Sul-id combustible, s. distlliition cigni: uit Lhslrugtedto,convey@ muss of fuel. f j llnmoiimoflhargitompornturo in coni gir inljvj fingir-V` nn-ggg@ midi distillation wqxrrldreceptuclmmeans forfre nfsniltng distillntes from said chamber, u

iti'

combustion from said combustion chamber into said distillation chamber and located outside of the inclosure of each one of these two said chambers, and au aperture in the inclosure of each one of the two saic. cha |nbers for connecting the interior of the latter to the interior of said canal..

30. In an apparatus for distilling fuel, a distillation chamber, nie-.ins for supplying solid fuel into and for discharging combustible residue of distillation out of said chamber, means for heating and for thereby dist-illing fuel within said chamber, means for separating resulting distillates from resulting residue of distillation,"` means for preventing anentrance cfa consequential amount of air of natural chemical character into said chamber, a combustion chamber constructed to roduee while in operation, always substantially one and the same kind of gaseous products of combustion with respect to their chemical character, a canal located outside the inclosure of each one of the two said chambers, an aperture in the nclosureof each one of the two said chambers for connecting the interior of the latter to the interior of said canal, and means for supplying products of combustion from said combustion chamber through said canal into said residue within said distillation chamber after said distillates have been separated from said residue.

31. ln an apparatus for distilling fuel, a distillation chamber, means for supplying solid fuel into and for discharging solid combustible out of said chamber, means for heutinr,v and for thereby distilling fuel within said chamber, means for separating resulting distlllates from resulting residue of distillation, means fnr rreventing un entrance of a consequential amount of air of natural chemical character into said chamber, a combustion chamber constructed to produce while in operation, always one and the .same kind of gaseous products of combustion with res )ect to their chemical character, u canal located outside of the inclosure of each one of the two said chambers, un aperture in the inclosure of each one of the two Said chmnbers for connectin v the interior of the lutter to the interior uit said canal, means for supplying products of combustion from .said combustion chamber through said canal into .said residue after said distillatcs have been separated from the lutter, und moans for discharging `separately from said distillati-s rosultiuig gaseous products from said rhululu-r.

32. ln an apparatus for continuously dis,Y tllling.' fuel, u distillation ronduit, moans provided to lie continuously in operation for supplying solid fut-l into au inlet of said conduit and for Il liwrinq this fuel Lhrtllluh .said conduit toward un outlet for rorullustible residue of distillation,` means Vfor preventing an entrance of a consequential amount of air of natural chemical character into said conduit, means or `treatin .and for therebydisti-lrlng' aluel within sai conduit', a combustion chamber-constructed tosup ,lying solid V"fuel into V1m. inlet of said con uit and for'delveringithis.uebthrough said conduit toward an. ontletsorzcombustible residue ofdi'sti'llutionlmeanszprevided to prevent l,an entrance yof u.' amusequntialamountof 4air of natural ehem-ical character intosaidcoiiduit, means -for :hea-tinghnd for therebyditillin'g fuel within'said conduit, l. combustegivchainber constructed toproduce, while inperation, always substantlallypne andthe same -kind *ofgaseous-products of combustion with respect -trvtheu chemical character, a pluralityof.inletsprovided,in a substantially 'upright'-eidedncloeure4 of said conduit, means provi-dedito supply# aseous products 'from -saidf-combustionwc amber through each one of said inlets into fuel within saidzcouduit, aplurality vof outlets for distillutes from Suid-conduit, yand means for discharging-distinctes fromteach one of said outlets.

34. In an apparatus for distllling fuela distillation chamber, means 'for supplyini solid fuel into and for :discharging soliii combustible outofv said chamber, means for heating and for therebydiatillin -fel with. in said chamber, melma fordiecmrging resulting dstllates from artid-chamber, means provided tn prevent nn entrance of a conseA uucntiul amount of uir'of natural chemical character into said chamber, combustion chamber constructed tnproduce, while in operation. always substantially one and the same kind of gaseous products of combustion with inspect to their chemical character, two canals located outside nf the inclosul'u of unt-li one of the two said chambers, one of said canals cmnmunicutin with the interior of nach one of said cham lcr's for supplying products of combustion from said combustion rhuml'rcr llltO Huid distillation chamber,

and the other of said two canals provided for spplyin into said distillation chamber a quantity o Huid of a tem erstere difierent from the temperature o said products of combustion.

35. 'in an apparatus for distilling fuel, a distilliation chamber, ineens for snpplyin solid lfuel into and for discharging soliii combustible out of said chamber, means for preventin an entrance of a consequential amount o air of natural chemical character into seid chamber, a combustion chamber constructed to produce, while in operation, always substantially one and the same kind of gdseous roducts of combustion with rcspect to their chemical clmracter, means for withdrewing gaseous products from said eombusition chamber und for increasing the pressure of the withdrawn aseons products und for delivering the wit drawn gaseous products under increased ressure into fuel within said chamber, an means for disclmrgingresuiting Huid from said chamber.

36. Inan apparatus for continuously distllin fuel, n distillation conduit, means provi ed to be continuously in operation for einem supplying solid fuel into en inlet of seid conduit and for delivering this fuel through seid conduit toward an outlet for combustible residue of distillation, means provided to prevent an entrance of a v-consce;uentiul amount of nir of naturel chemical character into said conduit, a combustion chamber constructed to produce, while in operation, always snhstnntiall)v one and the same kind of gaseous products of'combuston with respect to their chemical charncer, vmeims for withdrawing gaseous products from said combustion chamber, for increasing the pressure of the withdrawn aseous products and for delivering the wit drawn gaseous products under increased pressure into fuel within said conduit, and means for continuonslr discharging resulting Huid from said con uit.

In testimony whereof I have signedmy nume to this specification in the presence of two subscribing' witnesses.

i HENNINGl FRIEDRICH WALLIANN.

Witnesses:

.Mrs G. S. WALKER, W. D. PENNLNGTON.

Correcton Letter'slPatent No. 1,177,584.

limprovement in Apparatus for Generating Gas,'

It is hereby certified that in Letters Patent No. 1,177,584, granted March 28, 1916, upon the application of Henning AFriedrich Wallmann, of Chicago, Illinois, for un an error appears in the` printed specification reqixring correction as follows: Page 11, claim 32, strike out line 72; and that the said Letters Patent should be read with this correction-therein that the same inay conform toA the record of the vase in the Patent vOee.

Signed and sealed this 22d day of August, A. D., 1916.

' [BELL] If. W. H. CLAY,

Acting Commissioner of Patcnt-s. 

